Tue, 26 Jan 2010 16:52:29 -0800
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
Summary: G1 now answers "no" to the query can_elide_initializing_store_barrier() in the product build. A debug flag allows alternate behaviour in debug builds.
Reviewed-by: iveresov, tonyp
1 /*
2 * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 // The following OopClosure types get specialized versions of
26 // "oop_oop_iterate" that invoke the closures' do_oop methods
27 // non-virtually, using a mechanism defined in this file. Extend these
28 // macros in the obvious way to add specializations for new closures.
30 // Forward declarations.
31 enum G1Barrier {
32 G1BarrierNone, G1BarrierRS, G1BarrierEvac
33 };
35 template<bool do_gen_barrier, G1Barrier barrier,
36 bool do_mark_forwardee, bool skip_cset_test>
37 class G1ParCopyClosure;
38 class G1ParScanClosure;
40 typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure;
42 class FilterIntoCSClosure;
43 class FilterOutOfRegionClosure;
44 class FilterInHeapRegionAndIntoCSClosure;
45 class FilterAndMarkInHeapRegionAndIntoCSClosure;
47 #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES
48 #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined."
49 #endif
51 #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \
52 f(G1ParScanHeapEvacClosure,_nv) \
53 f(G1ParScanClosure,_nv) \
54 f(FilterIntoCSClosure,_nv) \
55 f(FilterOutOfRegionClosure,_nv) \
56 f(FilterInHeapRegionAndIntoCSClosure,_nv) \
57 f(FilterAndMarkInHeapRegionAndIntoCSClosure,_nv)
59 #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES
60 #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined."
61 #endif
63 #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f)